A061473 First (leftmost) digit - second digit + third digit - fourth digit .... = 4.

4, 40, 51, 62, 73, 84, 95, 103, 114, 125, 136, 147, 158, 169, 202, 213, 224, 235, 246, 257, 268, 279, 301, 312, 323, 334, 345, 356, 367, 378, 389, 400, 411, 422, 433, 444, 455, 466, 477, 488, 499, 510, 521, 532, 543, 554, 565, 576, 587, 598, 620, 631, 642

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Mathematica

Select[Range[700], Total[Times@@@Partition[Riffle[IntegerDigits[#], {1, -1}, {2, -1, 2}], 2]]==4&] (* Harvey P. Dale, Jan 27 2014 *)

Crossrefs

Cf. A008593, A060978-A060980, A060982, A061470-A061479, A061870-A061882.

Sequence in context: A104292 A077329 A169967 * A367926 A091104 A069539

Adjacent sequences: A061470 A061471 A061472 * A061474 A061475 A061476

Keyword

nonn,base,easy

Author

Amarnath Murthy, May 05 2001

Extensions

More terms from Robert G. Wilson v, May 10 2001 and from Larry Reeves (larryr(AT)acm.org), May 14 2001

Status

approved